Thanks for sharing.

As a somewhat related thing that others might find useful, here are my shortcuts to get my Varmilo keyboard media keys working with useful functions instead of the default stuff. I’ve got these set up as custom shortcuts in KDE, but they should work in any context:

Next track

dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next

Previous track

dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Previous

Play-pause toggle

dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause

You can replace Spotify in the destination parameter with any MPRIS-capable program. To find out what’s available on the dbus and get the exact name, use this command:

dbus-send --session --dest=org.freedesktop.DBus --type=method_call --print-reply /org/freedesktop/DBus org.freedesktop.DBus.ListNames

Thanks for your detailed reply. I can feel I’m out of my depth in many ways, but between your reply and the others I’ve gotten, I have a lot of entryways into the problem, and I’m looking forward to figuring out how to make it work. I’ve done a bit of coding in C++ in the past as well; maybe that would also be an option. But since the purpose of the exercise is primarily to get more familiar with Rust, I think I’ll exhaust whatever options I have down that path first. Thanks again :)

Thanks so much for taking the time to write that long post. I have lots of things to dig into now. I think I’d prefer not injecting anything into the game for the reasons you mentioned, the most important consideration being the anticheat risk. I don’t know what the company behind the game have implemented of that nature.

OP here. Thanks for your reply. If what you’re asking is the case, I’d be happy to find a solution that runs under X instead. This tracker would in any case mostly be for my own use. I was just excited to finally get Wayland working with my NVIDIA card with the explicit sync stuff.